- A2H4
- B8O16
- C26Fe56
- D92U238
Explanation:
Binding energy per nucleon increases with atomic number. The greater the binding energy per nucleon the more stable is the nucleus.
For 26Fe56 number of nucleons is 56.
This is most stable nucleus, since maximum energy is needed to pull a nucleon away from it.
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The electrical circuits used to get smooth d.c. output from a rectifier circuit is called
|
(a) Filter |
(b) Amplifier |
(c) Full wave rectifier |
(d) Oscillator |
What is the ratio of heat generated in R and 2R
|
(a) 2 : 1 |
(b) 1 : 2 |
(c) 4 : 1 |
(d) 1 : 4 |
Assertion : Leclanche cell is used, when constant supply of electric current is not required.
Reason : The e.m.f. of a Leclanche cell falls, if it is used continuously.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
An electron enters a region where magnetic (B) and electric (E) fields are mutually perpendicular to one another, then
|
(a) It will always move in the direction of B |
|
(b) It will always move in the direction of E |
|
(c) It always possess circular motion |
|
(d) It can go undeflected also |
At a place, the horizontal and vertical intensities of earth's magnetic field is 0.30 Gauss and 0.173 Gauss respectively. The angle of dip at this place is
| (a) 30° | (b) 90° | (c) 60° | (d) 45° |
In the circuit as shown in the figure the effective capacitance between A and B is

|
(a) 3 μF |
(b) 2 μF |
(c) 4 μF |
(d) 8 μF |
A conductor has 14.4 ×
coulombs positive charge. The conductor has (Charge on electron = 1.6
|
(a) 9 electrons in excess |
(b) 27 electrons in short |
|
(c) 27 electrons in excess |
(d) 9 electrons in short |